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SUN2000-(3.8KTL-11.4KTL)-USL0
Power Compartment Quick Guide
Copyright © Huawei Technologies Co., Ltd. 2018. All rights reserved.
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Prerequisites
The power compartment of SUN2000-3.8KTL/5KTL/7.6KTL-USL0 and SUN2000-
9KTL/10KTL/11.4KTL-USL0 can be replaced in the same way. The following describes the
installation of the SUN2000-3.8KTL/5KTL/7.6KTL-USL0.
1. Powering off the system.
2. Before replacing the power compartment, ensure that the screw assemblies between the
maintenance compartment and mounting bracket have been tightened.
NOTE
Issue: 01
Part Number: 31509970
Date: 2018-06-22
NOTICE
• After the SUN2000 powers off, the remaining electricity and heat may still cause electric shock
and burns. After power-off, wait 5 minutes before servicing the SUN2000. Always wear
protective gloves when servicing the SUN2000.
• If the SUN2000 is connected to the battery, ensure that a shutdown command is sent from the
app. Power off the system after the SUN2000 has shut down. If no shutdown command is sent
from the app, the SUN2000 will shut down after the power grid is powered off. The SUN2000
will wait for 1 minute and restart (not grid-tied) and charge the battery, which poses an electrical
hazard when you turn off the DC switch.
• If
Off-grid mode
is set to
Enable
and
Grid-tied/Off-grid mode switching
is set to
Automatic
switching
for the SUN2000, ensure that a shutdown command is sent from the app and power
off the system only after the SUN2000 has shut down. If no shutdown command is sent from
the app, the SUN2000 will switch to the backup state after the power grid is powered off, which
poses an electrical hazard when you turn off the DC switch.
a. Send a shutdown command from the app.
b. Turn off the AC switch between the SUN2000 and the power grid.
c. Turn off the DC switch at the bottom of the SUN2000.
d. If a battery connects to the battery port of the SUN2000, power off the battery.
